// Metal风格 (默认)
		String lookAndFeel = "javax.swing.plaf.metal.MetalLookAndFeel";
		UIManager.setLookAndFee(lookAndFeel);
// Windows风格
		String lookAndFeel = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
		UIManager.setLookAndFee(lookAndFeel);  

// Windows Classic风格
		String lookAndFeel = "com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel";
		UIManager.setLookAndFee(lookAndFeel);  

// Motif风格
		String lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
		UIManager.setLookAndFeel(lookAndFeel);

// Mac风格 (需要在相关的操作系统上方可实现)
		String lookAndFeel = "com.sun.java.swing.plaf.mac.MacLookAndFeel";
		UIManager.setLookAndFeel(lookAndFeel);

// GTK风格 (需要在相关的操作系统上方可实现)
		String lookAndFeel = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
		UIManager.setLookAndFeel(lookAndFeel);

// 可跨平台的默认风格
		String lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName();
		UIManager.setLookAndFeel(lookAndFeel);

// 当前系统的风格
		String lookAndFeel = UIManager.getSystemLookAndFeelClassName();
		UIManager.setLookAndFeel(lookAndFeel);